634073540449 has 2 divisors, whose sum is σ = 634073540450. Its totient is φ = 634073540448.

The previous prime is 634073540437. The next prime is 634073540459. The reversal of 634073540449 is 944045370436.

634073540449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623694006049 + 10379534400 = 789743^2 + 101880^2 .

It is a cyclic number.

It is not a de Polignac number, because 634073540449 - 2¹¹ = 634073538401 is a prime.

It is not a weakly prime, because it can be changed into another prime (634073540459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317036770224 + 317036770225.

It is an arithmetic number, because the mean of its divisors is an integer number (317036770225).

Almost surely, 2^634073540449 is an apocalyptic number.

It is an amenable number.

634073540449 is a deficient number, since it is larger than the sum of its proper divisors (1).

634073540449 is an equidigital number, since it uses as much as digits as its factorization.

634073540449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 49.

The spelling of 634073540449 in words is "six hundred thirty-four billion, seventy-three million, five hundred forty thousand, four hundred forty-nine".